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MSSC Maintenance Awareness Final Exam
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MSSC Maintenance Awareness FinalExam
What are the three essential components of a chain drive system? - Answer: Chain,
driver sprocket, driven sprocket.
What is the sprocket ratio for a chain drive system with a driven sprocket with 54
teeth and an 18-tooth driver sprocket? - Answer three.
A chain drive system includes a driver sprocket with 24 teeth and a driven sprocket
with 72 teeth. If the driver shaft has 633 ft-lbs of torque, how much torque will the
driven shaft have? - Answer 1899.
This type of chain is often used on chain wrenches, forklifts, and other lifting
devices. - ANSWER: Leaf chain.
An offset chain's design eliminates the need for a connecting link. For this reason,
it is commonly used in? - ANSWER Heavy-duty and low-speed applications
Are multiple-strand chains being used? - ANSWER To send a significant amount
of power
How does a chain drive compare to a V-belt drive? - ANSWER is more efficient.
When installing a chain drive system, inspect the motor and driven component for
soft feet and excessive run-out. The shaft run-out should be no greater than? -
ANSWER 0.002.
Chain sag is determined by turning the sprockets until there is little or no chain sag
on the _____ side, then measuring the sag on the _____ side. - ANSWER Taut,
Slack.
,A chain should be replaced when it has grown _____ longer than its original length.
- ANSWER 3 percent
Is chain sag measured? - ANSWER: In between the sprockets
A specific link used to reattach a chain is known as a _____ link. - Answer Master
A chain puller is a tool that holds two ends of a chain together. - ANSWER Master
Link is installed.
When utilizing a chain puller, how do the jaws open and close? - ANSWER A dial
at the top of the tool
What are the three components of a belt drive system? - ANSWER: Belt, driven
sheave.
Pitch is defined as the distance between a point and an object. - ANSWER Similar
comparable point.
A belt drive's pitch circle is what? - ANSWER The location in the belt indicates the
center of the force delivered by the belt.
A belt drive with a 12-inch driver pulley and a 6 inch driven pulley has what pulley
ratio? - Answer: 0.5
Which of the following relates to the calculation of a belt drive system's shaft speed
and torque? - ANSWER Shaft speeds are inversely related to pitch diameter.
, The driven pulley in the belt drive system is shown rotating at _____ rpm. -
ANSWER 1200
One significant feature of a timing belt is? - ANSWER: It will not slip during
operation.
The fractional horsepower (FHP) V-belt, commonly known as a light duty belt, is
intended for low-power applications under _____ Hp. - Answer: 7.5
The V-belt should ride _____ in the groove, with its top close to the top of the
sheave; the V-belt should not come into contact with the sheave. - Answer: High,
bottom.
A _____ should be used to inspect sheave groove wear. - Answer: Sheave gauge.
The maximum allowed deflection force on a belt is greater than the minimum
deflection force. - The answer is 50% greater.
What is the definition of belt span? - Answer: The distance between the locations
on the sheaves where the belt touches each sheave.
What is the most basic method for testing belt tension? - Answer: Your sense of
touch.
When connecting a three-phase motor, the three lines (T1, T2, and T3) are typically
connected to _________. - ANSWER: L1, L2, and L3.
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